gso-landingpage/src/app/globals.css

@import "tailwindcss";

:root {
  --background: #f8f7ff;
  --foreground: #0f172a;

  /* ── Typography color system (3 tones only) ── */
  --text-head:  #0f172a;   /* h1–h4, bold labels */
  --text-body:  #475569;   /* all running paragraphs */
  --text-muted: #94a3b8;   /* meta, dates, secondary */
  /* Accent #6366f1 — ONLY badges, icons, CTAs. Never in body copy. */
}

@theme inline {
  --color-background: var(--background);
  --color-foreground: var(--foreground);
  --font-sans: var(--font-geist-sans);
  --font-mono: var(--font-geist-mono);
}

body {
  background: linear-gradient(160deg, #f5f4ff, #f8f7ff 40%, #f4f7fa);
  color: var(--text-body);
  font-family: var(--font-geist-sans, Arial, Helvetica, sans-serif);
  min-height: 100vh;
}

/* ── Heading font: Urbanist (Croogla-equivalent) ── */
h1, h2, h3, h4 {
  font-family: var(--font-urbanist, var(--font-geist-sans));
  color: var(--text-head);
}

p {
  color: var(--text-body);
}

.mc-card {
  background: #ffffff;
  border: 1px solid #eae8f8;
  border-radius: 1rem;
}

.mc-card-accent {
  background: #ffffff;
  border: 1px solid #eae8f8;
  border-radius: 1rem;
  border-top: 3px solid transparent;
  border-image: linear-gradient(90deg, #6366f1, #8b5cf6, #a78bfa) 1;
  border-top-left-radius: 1rem;
  border-top-right-radius: 1rem;
}

.mc-nav-bg {
  background: linear-gradient(135deg, #0c0a1e, #1a1744 40%, #0f0d2a);
}

.mc-dark-bg {
  background: linear-gradient(135deg, #0c0a1e, #1a1744 40%, #0f0d2a);
}

.mc-btn {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.35);
  transition: box-shadow 0.2s, transform 0.2s;
  color: #fff;
  font-weight: 700;
  border-radius: 0.75rem;
}

.mc-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 28px rgba(99, 102, 241, 0.55);
}

details summary::-webkit-details-marker { display: none; }

/* ── Shared micro-animations ── */
@keyframes mc-fade-in {
  from { opacity: 0; transform: translateY(5px); }
  to   { opacity: 1; transform: translateY(0); }
}
.mc-fade-in { animation: mc-fade-in 0.35s ease forwards; }

@keyframes mc-bounce {
  0%   { transform: translateY(0); }
  30%  { transform: translateY(-14px); }
  55%  { transform: translateY(-6px); }
  75%  { transform: translateY(-10px); }
  90%  { transform: translateY(-2px); }
  100% { transform: translateY(0); }
}
.mc-bounce { animation: mc-bounce 0.9s ease forwards; }

/* ── Flip Cards ── */
.flip-card-wrapper {
  perspective: 1000px;
  height: 220px;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.55s cubic-bezier(0.4, 0.2, 0.2, 1);
}

.flip-card-inner.flipped {
  transform: rotateY(180deg);
}

.flip-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 24px;
  text-align: center;
}

.flip-front {
  background: #ffffff;
  border: 1px solid #eae8f8;
  box-shadow: 0 2px 12px rgba(99, 102, 241, 0.06);
}

.flip-back {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  transform: rotateY(180deg);
  box-shadow: 0 4px 24px rgba(99, 102, 241, 0.35);
}

.flip-label {
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-radius: 99px;
  padding: 3px 10px;
}

.flip-label-front {
  background: #eef2ff;
  color: #4338ca;
}

.flip-label-back {
  background: rgba(255,255,255,0.2);
  color: #fff;
}

.flip-text {
  font-size: 0.9rem;
  line-height: 1.5;
  font-style: italic;
}

.flip-front .flip-text  { color: #475569; }
.flip-back  .flip-text  { color: #fff; font-style: normal; font-weight: 600; }

.flip-hint {
  font-size: 0.68rem;
  display: flex;
  align-items: center;
  gap: 4px;
  color: #a5b4fc;
  margin-top: auto;
}

.flip-hint-back {
  color: rgba(255,255,255,0.7);
}

/* ── Timeline scroll animations ── */
.tl-card {
  opacity: 0;
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.tl-from-left  { transform: translateX(-56px); }
.tl-from-right { transform: translateX(56px);  }
.tl-from-bottom{ transform: translateY(40px);  }

.tl-card.tl-visible {
  opacity: 1;
  transform: translateX(0) translateY(0);
}